window.onload example 3: Correct usage

window.onload example 3: Correct usage

This example uses an external script specified by writing out a script tag with src
via document.write. Note that the assignment to window.onload = init; occurs outside of the
script block where the script tag is written out. This works because the
init function used to initialize window.onload is defined in the previous script
block and is available in subsequent script blocks.

This example works as expected by displaying an alert in both Netscape 6/Mozilla or Internet Explorer.